PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-16:57:50
G08     319.9          11.7                6.1 +/-   13.19      16.4 +/-   13.19  0.060 / 0.060
G10     306.7          54.4               10.6 +/-    1.09      12.7 +/-    1.09  0.050 / 0.090
G14     212.3          18.0               15.1 +/-    0.83      34.8 +/-    0.83  0.080 / 0.100
G15     45.4           21.1                8.1 +/-    2.45      17.4 +/-    2.45  0.080 / 0.100
G18     17.1           63.8               10.2 +/-    0.39      11.3 +/-    0.39  0.190 / 0.220
G20     75.2           16.2                8.6 +/-    1.59      20.8 +/-    1.59  0.110 / 0.300
G21     117.6          63.9               12.0 +/-    0.63      13.2 +/-    0.63  0.110 / 0.340
G24     91.5           28.8               10.6 +/-    1.79      19.0 +/-    1.79  0.180 / 0.320
G27     291.3          37.1               11.1 +/-    3.53      17.0 +/-    3.53  0.060 / 0.080
G32     214.1          37.8               14.2 +/-    1.67      21.4 +/-    1.67  0.060 / 0.090